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Power calculation

Dustin A Bruening, Kota Z Takahashi
BACKGROUND: Kinematic multi-segment foot models have been increasingly used to study foot function. The addition of kinetics to these models may enhance their utility; however, this been hindered by limitations in measuring ground reaction forces (GRFs) under individual foot segments. PURPOSE: To determine the accuracy of partitioning segment GRFs from a single force platform on foot joint kinetics. METHODS: Two potential partitioning methods were applied to a previously published three-segment kinetic foot model...
March 6, 2018: Gait & Posture
Jing Dong, Yaqin Zhang, Haining Zhang, Zhijie Jia, Suhua Zhang, Xiaogang Wang
PURPOSE: To compare the axial length (AL), anterior chamber depth (ACD) and intraocular lens power (IOLP) of IOLMaster and Ultrasound in normal, long and short eyes. METHODS: Seventy-four normal eyes (≥ 22 mm and ≤ 25 mm), 74 long eyes (> 25 mm) and 78 short eyes (< 22 mm) underwent AL and ACD measurements with both devices in the order of IOLMaster followed by Ultrasound. The IOLP were calculated using a free online LADAS IOL formula calculator. RESULTS: The difference in AL and IOLP between IOLMaster and Ultrasound was statistically significant when all three groups were combined...
2018: PloS One
A H Reshak
Comprehensive ab initio calculations from first- to second-principles methods are performed to investigate the suitability of non-centro-symmetric CdLa2 S4 and CdLa2 Se4 to be used as active photocatalysts under visible light illumination. The calculations reveal the direct band gap nature of both compounds with large absorption coefficients (104 -105 cm-1 ). The absorption edges of CdLa2 S4 and CdLa2 Se4 occur at λ = 579.3 nm and λ = 670.1 nm, and the optical band gaps are estimated to be 2.14 eV and 1.85 eV for CdLa2 S4 and CdLa2 Se4 , respectively...
March 15, 2018: Physical Chemistry Chemical Physics: PCCP
T V Sachin Krishnan, Kento Yasuda, Ryuichi Okamoto, Shigeyuki Komura
We discuss thermal and active fluctuations of a compressible bilayer vesicle by using the results of hydrodynamic theory for vesicles. Coupled Langevin equations for the membrane deformation and the density fields are employed to calculate the power spectral density matrix of membrane fluctuations. Thermal contribution is obtained by means of the fluctuation dissipation theorem, whereas active contribution is calculated from exponentially decaying time correlation functions of active random forces. We obtain the total power spectral density as a sum of thermal and active contributions...
March 15, 2018: Journal of Physics. Condensed Matter: An Institute of Physics Journal
N Zavyalova, E M Akhmetshin
The focal point of the paper is an attempt to identify the most effective way to offer the information about BRICS-related subjects. BRICS organization has already become the topical issue of our research. This paper highlights the research of the best way to deliver BRICS messages. Communication plays a pivotal role in our present-day life. It is essential for a wide range of technologies. Therefore, our study has several objectives, i.e., to describe the difference between the Internet-oriented communication and the communication supported by television and press...
February 2018: Data in Brief
Kai Nordlund, Steven J Zinkle, Andrea E Sand, Fredric Granberg, Robert S Averback, Roger Stoller, Tomoaki Suzudo, Lorenzo Malerba, Florian Banhart, William J Weber, Francois Willaime, Sergei L Dudarev, David Simeone
Atomic collision processes are fundamental to numerous advanced materials technologies such as electron microscopy, semiconductor processing and nuclear power generation. Extensive experimental and computer simulation studies over the past several decades provide the physical basis for understanding the atomic-scale processes occurring during primary displacement events. The current international standard for quantifying this energetic particle damage, the Norgett-Robinson-Torrens displacements per atom (NRT-dpa) model, has nowadays several well-known limitations...
March 14, 2018: Nature Communications
David P Piñero, María T Caballero, Juan M Nicolás-Albujer, Dolores de Fez, Vicent J Camps
PURPOSE: To evaluate a new method of calculation of total corneal astigmatism based on Gaussian optics and the power design of a spherocylindrical lens (C) in the healthy eye and to compare it with keratometric (K) and power vector (PV) methods. METHODS: A total of 92 healthy eyes of 92 patients (age, 17-65 years) were enrolled. Corneal astigmatism was calculated in all cases using K, PV, and our new approach C that considers the contribution of corneal thickness...
March 13, 2018: Cornea
M Merced Montero-Campillo, Ibon Alkorta, José Elguero
A set of complexes L2HB···BeX2 (L = CNH, CO, CS, N2, NH3, NCCH3, PH3, PF3, PMe3, OH2; X = H, F) containing a boron-beryllium bond is described at the M06-2X/6-311+G(3df,2pd)//M062-2X/6-31+G(d) level of theory. In this quite unusual bond, boron acts as a Lewis base and beryllium as a Lewis acid, reaching binding energies up to -283.3 kJ/mol ((H2O)2HB···BeF2). The stabilization of these complexes is possible thanks to the -donor role of the L ligands in the L2HB···BeX2 structures and the powerful acceptor nature of beryllium...
March 14, 2018: Journal of Physical Chemistry. A
Alessio Cimmino, Paola Nocera, Benedetto Teodoro Linaldeddu, Marco Masi, Marcin Gorecki, Gennaro Pescitelli, Lucio Montecchio, Lucia Maddau, Antonio Evidente
From the culture filtrates of Diaporthella cryptica, an emerging hazelnut pathogen, 2-hydroxy-3-phenylpropanoate methyl ester and its 3-(4-hydroxyphenyl) and 3-(1H-indol-3-yl) analogues, named crypticins A-C, were isolated together with the well-known tyrosol. Crypticins A-C were identified by spectroscopic (essentially NMR and HRESI MS) methods. The R absolute configuration (AC) of crypticin A was determined comparing its optical rotation power and ECD spectrum with those of papuline, the methyl ester of (-)(S)-phenyllactic acid isolated as the main phytotoxin of Pseudomonas syringae pv papulans, responsible for apple blister spot...
March 14, 2018: Journal of Agricultural and Food Chemistry
Yanhua Ouyang, Likun Zhao, Zhuqing Zhang
Intrinsically disordered regions (IDRs) or proteins (IDPs), which play crucial biological functions in essential biological processes of life, do not have well-defined secondary or tertiary structures when isolated in solution. The highly dynamic properties and conformational heterogeneity of IDPs make them challenging to study with traditional experimental techniques. As a powerful complementary tool for experiments, all-atom molecular dynamics simulation can obtain detailed conformational information on IDPs, but the limitation of force field accuracy is a challenge for reproducing IDP conformers...
March 14, 2018: Physical Chemistry Chemical Physics: PCCP
C Löffler, H Sattler, U Löffler, B K Krämer, R Bergner
OBJECTIVE: In distinguishing urate arthritis (UA) from non-crystal-related arthritides, joint sonography including the detection of the double contour sign (DCS) and hypervascularization using power Doppler ultrasound (PDUS) is an important step in the diagnostic process. But are these sonographic features equally reliable in every accessible joint under real-life conditions? METHODS: We retrospectively analyzed 362 patients with acute arthritis and evaluated the DCS and the degree of PDUS hypervascularization in patients with gout and in those with arthritis other than urate arthritis (non-UA)...
March 13, 2018: Zeitschrift Für Rheumatologie
Carsten Nieder, Thomas A Kämpe
Introduction Our department's standard work-flow includes assessment of all the patients with the Edmonton Symptom Assessment System (ESAS), a one-sheet questionnaire addressing 11 major symptoms and wellbeing on a numeric scale of zero-10, before the palliative radiotherapy (PRT). Based on previous research, we hypothesized that the patients with minimal or moderate total symptom burden might have better overall survival after the PRT than those with at least one higher symptom score. Methods We performed a retrospective analysis of 94 patients and calculated actuarial survival from the first day of the PRT (Kaplan-Meier method)...
January 6, 2018: Curēus
Frederick Hakelberg, Philip Kiefer, Matthias Wittemer, Tobias Schaetz, Ulrich Warring
Well controlled and highly stable magnetic fields are desired for a wide range of applications in physical research, including quantum metrology, sensing, information processing, and simulation. Here we introduce a low-cost hybrid assembly of rare-earth magnets and magnetic field coils to generate a field strength of [Formula: see text]10.9 mT with a calculated spatial variation of less than 10-6 within a diameter of spherical volume of 150 μm. We characterise its tuneability and stability performance using a single Mg+ atom confined in a radio-frequency surface-electrode trap under ultra-high vacuum conditions...
March 13, 2018: Scientific Reports
Nazli Bozman, Cemal Gurkan, Huseyin Sevay, Damla Kanliada Demirdov, Filiz Ozbas-Gerceker
BACKGROUND: Southeastern Anatolia is the smallest, yet the most densely populated region among the seven major geographic constituents of Turkey. Situated in the Upper Mesopotamia, Southeastern Anatolia was also the northernmost extension of the Fertile Crescent, which is often considered as the earliest cradle of civilisation. AIM: To investigate the autosomal STR polymorphisms associated with a truly representative population sample pool from Southeastern Anatolia...
March 14, 2018: Annals of Human Biology
Alessandro Cucchi, Federica Molè, Lucia Rinaldi, Claudio Marchetti, Giuseppe Corinaldesi
PURPOSE: The primary prevention of peri-implantitis onset is a key factor in long-term implant success, and the evaluation of the antibacterial efficacy of different implant surfaces is fundamental in this way. The aim of this study was to assess if implants with collars coated with anatase were less subjected to bacterial colonization than implants with noncoated collars, and to investigate how implant bacterial colonization varies over time. MATERIALS AND METHODS: Eighteen patients in need of implant-supported rehabilitation were selected to have two adjacent implants placed, one with an anatase-coated collar and one with the collar uncoated...
March 2018: International Journal of Oral & Maxillofacial Implants
Hossein Zanjanian, Hamid Abdolabadi, Mohammad Hossein Niksokhan, Amin Sarang
Allocating water to organizational stakeholders poses a vital challenge to water managers. Organizations which benefit from water as the primary factor input attempt to achieve their objectives using cost-effective and quick-return strategies, such as increasing the water rights. In such circumstances, lack of water probably results in the conflict. Recognizing the management approaches, organizational priorities, and the stakeholders' influence power can play a dominant role in analyzing the future of such conflicts...
March 10, 2018: Journal of Environmental Management
Hugo Maciejewski, Abderrahmane Rahmani, Frédéric Chorin, Julien Lardy, Pierre Samozino, Sébastien Ratel
The purpose of the present study was to investigate whether three different approaches for evaluating squat jump performance were correlated to rowing ergometer performance in elite adolescent rowers. Fourteen young male competitive rowers (15.3 ± 0.6 years), who took part in the French rowing national championships, performed a 1,500-m all-out rowing ergometer performance (P1500) and a squat jump (SJ) test. The performance in SJ was determined by calculating the jump height (HSJ in cm), a jump index (ISJ = HSJ · body mass · gravity, in J) and the mean power output (PSJ in W) from the Samozino et al...
March 12, 2018: Journal of Strength and Conditioning Research
Daniel J Mermelstein, Charles Lin, Gard Nelson, Rachael Kretsch, J Andrew McCammon, Ross C Walker
Alchemical free energy (AFE) calculations based on molecular dynamics (MD) simulations are key tools in both improving our understanding of a wide variety of biological processes and accelerating the design and optimization of therapeutics for numerous diseases. Computing power and theory have, however, long been insufficient to enable AFE calculations to be routinely applied in early stage drug discovery. One of the major difficulties in performing AFE calculations is the length of time required for calculations to converge to an ensemble average...
March 12, 2018: Journal of Computational Chemistry
Dae-Myeong Geum, SangHyeon Kim, SooSeok Kang, Hosung Kim, Hwanyeol Park, Il Pyo Rho, Seung Yeop Ahn, Jindong Song, Won Jun Choi, Euijoon Yoon
In this paper, InAs0.81 Sb0.19 -based hetero-junction photovoltaic detector (HJPD) with an In0.2 Al0.8 Sb barrier layer was grown on GaAs substrates. By using technology computer aided design (TCAD), a design of a barrier layer that can achieve nearly zero valance band offsets was accomplished. A high quality InAs0.81 Sb0.19 epitaxial layer was obtained with relatively low threading dislocation density (TDD), calculated from a high-resolution X-ray diffraction (XRD) measurement. This layer showed a Hall mobility of 15,000 cm2 /V⋅s, which is the highest mobility among InAsSb layers with an Sb composition of around 20% grown on GaAs substrates...
March 5, 2018: Optics Express
Liangbi Su, Xinsheng Guo, Dapeng Jiang, Qinghui Wu, Zhipeng Qin, Guoqiang Xie
3 at.% Er:SrF2 laser crystals with high optical quality were successfully grown using the temperature gradient technique (TGT). The intense mid-infrared emission was observed around 2.7 μm with excitation by a 970 nm LD. Based on the Judd-Ofelt theory, the emission cross-sections of the4 I13/2 -4 I11/2 transition were calculated by using the Fuchtbauer-Ladenburg (FL) method. Efficient continuous-wave laser operation at 2.8 µm was achieved with the lightly-doped 3 at.% Er:SrF2 crystal pumped by a 970 nm laser diode...
March 5, 2018: Optics Express
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